Hoists for building materials



Feb. 5,1957 c. w. wEsTMARK 2,780,373

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Arromve'rs United States Patent I-IOISTS FOR BUILDING MATERIALS Clarence W. Westmark, Minneapolis, Minn.

Application August 28, 1953, Serial No. 377,041

11 Claims. (Cl. 214-95) The invention herein has relation to a hoist for materrals of various character, such as solid elongated members, brick or concrete blocks, sand, gravel, loose cement, etc.

The purpose of the invention is to provide a new and improved hoist which will be readily capable of use in the handling of various types of materials customarily employed in the building trades.

In the accompanying drawings forming a part of this specification,

Fig. 1 is a side elevational view of a hoist made according to the invention;

Fig. 2 is a front elevational view of the hoist as it would appear from the left in Fig. 1;

Fig. 3 is an enlarged fragmentary view, partially in section, detailing parts of the hoist as they would appear from the position on line 3-3 in Fig. 2;

F Fig. 4 is a detail sectional view, taken on line 4-4 in Fig. 5 is an enlarged vertical sectional view, partially broken away, taken on line 5-5 in Fig. 1;

6 is a detail sectional view, taken on line 6-6 in Fig. 7 is a detail sectional view, taken substantially on line 5-5 in Fig. 1, looking in the opposite direction; 8 is a detail sectional view, taken on line 8-8 in Fig. 9 is an enlarged fragmentary side elevational view, corresponding generally with the disclosure of Fig. 1, but showing a platform of the hoist, and parts associated with said platform, in a different position;

Fig. 10 is an enlarged horizontal sectional view, take on line 10-10 in Fig. 5;

Fig. 11 is a view corresponding generally with the dis closure as in Fig. 1 and Fig. 9, but showing the hoist as when being utilized to elevate different kind of material;

Fig. 12 is a fragmentary view, partially in section, detailing parts as they would appear from the position of line 12-12 in Fig. 11;

Fig. 13 is a detail sectional view, taken on line 13-13 in Fig. 12;

Fig. 14 is a fragmentary elevational view of the platform of the hoist, and elements supporting said platform, additionally disclosing a flooring upon the platform;

Fig. 15 is a horizontal sectional view, taken on line 15-15 in Fig. 14; and

Fig. 16 is an enlarged fragmentary elevational view, taken from the position on line 16-16 in Fig. l.'

With respect to Figs. 1 to 10 and 16 of the drawings and the numerals of reference thereon, 20 denotes a hoist incorporating features and characteristics of the invention, and 21 represents building construction in connection with which the hoist is to be employed. The building construction 21 is merely illustrative. The hoist can find use in the erection of buildings of various different kinds.

- 2,780,373 Patented Feb. 5, 1957 2 upon the ground or other supporting surface, rigidly supports a pair of spaced apart, parallel, vertical uprights 23 each constituted as a plurality of alined girder members 24.

Each girder member 24 is of H-shape in cross-section, including a body portion 25 having its width in perpendicular relation to the building construction 21, and flange portions in perpendicular relation to said body portion and parallel relation to said building construction. Outwardly extending parts of the flange portions of each girder member 24, at the outer side of the body portion 25, are represented 26, 26, and inwardly extending parts of said fiange' portions of each girder member, at the inner side of said body portion 25, are denoted 27, 27. In the instance of each girder member, the body portion 25 and the outwardly extending parts 26, 26 together provide an outwardly facing channel element bounded at its base by said body portion and at its opposite sides by said outwardly extending parts, and the body portion 25 and the inwardly extending parts 27, 27 together provide an inwardly facing channel element bounded at its base by said body portion and at its opposite sides by said inwardly extending parts. I

The body portions and the flange portions, respectively, of the girder members 24 of each vertical upright 23 are in vertical alinement. The manner in which lower portions of upper girder members are detachably assembled with upper portions of lower girder members will be apparent from the drawings, particularly Figs. 3 and 4. A first anchor plate 28 is secured in the upper end portion of each lower girder member 24 between the outwardly extending parts 26, 26 of the flange portions and in spaced, parallel relation to the body portion of the girder member. A second anchor plate 29 is secured in the lower end portion of each upper girder member 24 between the outwardly extending parts 26, 26 of the flange portions and against the body portion of the girder memher, and a tongue 30, constituted as an integral extension of said second anchor plate in alinement therewith; projects downwardly from the lower end of the girder member to removably lie in a concavity 31 in the upper end of the directly below girder member and bounded at one of its vertical side surfaces by the corresponding body portion 25, at its other vertical side surface by the corresponding first anchor plate 28, at one of its vertical side edges by one of the outwardly extending parts 26 and at its other vertical side edge by a wear plate 32 rigidly secured in said concavity 31 between the body portion 25 and first anchor plate 28 in adjacent relation to the other of the outwardly extending parts 26. The lower end portion of each tongue 30 converges down- =wardly, as at 33, in order that the tongues 30 can be readily and easily assembled With the concavities 31. The different girder members engage each other end to end when assembled, and the construction and arrangement will be such that the tongues 30 will be tightly fitted in the concavities 31 to insure rigid support of the girder members in vertical alinement.

The lower portion of each upper girder member is rigidly, detachably secured to the upper portion of a lower girder member through the instrumentality of a vertical locking plate 34 in parallel relation to the flange portions ternally threaded members 35. Whereas the apertures 36 of the girder members and situated between the vertical uprights 23 and the building construction 21. The outwardly and inwardly extending parts 26 and 27 of each girder member which are at the sides of said vertical uprights adjacent said building construction support vertically alined, spaced, internally threaded members 35.. Each locking plate 34 is provided with vertically alined,

spaced apertures 36 for removably receiving externallyv threaded bolts 37 adapted to be turned home in the inare spaced at relatively small distance apart, the internally threaded members 35 are spaced at comparatively great distance apart which is a multiple of the distance apart said apertures 36 are spaced. For example, if the apertures 36 are spaced at three inches apart, the internally threaded members 35 desirably may be spaced at one foot a art.

Each of the vertical locking plates 34 will be in overlapped relation to an upper girder member and a lower girder member. When the bolts are turned home, as in Figs. 1, 3, 9 and 16, upper and lower girder members adjacent each other will be secured in fixed relation.

The vertical uprights 23 are secured in fixed relation to each other through the instrumentality of cross-beams 38 interconnecting locking plates 34 which are upon said vertical uprights in opposite relation to each other and in the same horizontal plane. See Figs. 1, 2, 3 and 16. Bolts in opposite end portions of the cross-beams 38 and in apertures in horizontally alined locking plates are denoted 39.

Floor structures supported by different ones of the crossbeams 38, as well as by the building construction 21 are denoted generally at 49. In Fig. there is disclosed a first floor sn'ucture at the base of a door opening and a second floor structure at the base of a window opening. The locking plates 34- are attachable at selective elevationsupon the vertical uprights 23, in the manner as hereinbefore set forth, to make possible the support of floor structures at desired elevations, depending upon the elevations of floors, doors, windows, etc., of buildings under construction.

The body portions 25 and the inwardly extending parts 27,27 of the 'fiange portions of the girder members 24 of the'different vertical uprights 23 together provide oppositely disposed, inwardly facing channel elements Which constitutelongitudinal guideways of the hoist in facing relation to each other. tated differently, body portions 25 of oppositely disposed girder members 24 are in facing relation, and inwardly extending parts 27, 27 of opposite- 1y disposed girder members, at opposite edges of the body portions and in spaced relation to each other, together provide longitudinally extending guideways for a purpose to 'be made plain. A horizontal platform 41, situated between the vertical uprights 23 and extending to position forwardly thereof, is mounted for slidable movement longitudinally of said vertical uprights. The horizontal platform 41 is supported by a frame including spaced, parallel, vertical side frame members 42, 42 held in spaced relation at their upper ends by said horizontal platform and at their lower end-portions byspaced, parallel, forward and rearward, horlzontal frame members, denoted 43 and 44, respectively. Each side frame member 42 is constituted as a channel piece, and opposite ends of the horizontal frame members 43 and 44 are rigidly secured to spaced apart portions of said side frame members, respectively. See Figs. 1, 2, 5, 6 and 10.

Intermediate portions of the bodies of the side frame members or channel pieces 42, 42 rigidly support a first set of horizontally alinecl guide rollers 45, 45 situated exteriorly of said side frame members or channel pieces in the longitudinal guideways provided by inwardly extending parts 27, 27 of oppositely disposed girder members, and lower end portions of said bodies of said side frame members or channel pieces rigidly support a second set of horizontally alined guide rollers 46, 4s situated exteriorly of the side frame members or channel pieces 42 in said mentioned longitudinal guideways. See Figs. 2, 5 and 10. The guide rollers 45, 45, 46, 46 are of diameter to span the distance between the inwardly extending parts 27,27 of the flange portions of the girder members 24, and oppositely disposed guide rollers 45, 45 and 46, 46 are slightly spaced inwardly from the adjacent body por tions 25, 25.

The horizontal frame members 43 and 44 support spaced stub shafts, represented 47, 47, situated adjacent the side frame members 42, 42, respectively, and disposed in perpendicular relation to said horizontal frame members. Each of said stub shafts l7 rotatably supports a pair of pulleys 43 disposed in proximate relation to each other.

A cable 49 having an end thereof secured, as at 50, to a locking plate 34 at an upper portion of one of the vertical uprights 23 extends downwardly over a first pulley 48 of one of the sets, thence horizontally over a first pulley 48 of the other set, thence over the second pulley 48 of said one set and thence over the second pulley 4-8 of said other set. Thence said cable extends upwardly over a sheave 51 suitably and conveniently secured to an upper portion of the vertical upright opposite the one on which the cable 49 is fixedly supported, and from the sheave 51 said cable extends downwardly under a sheave 52 fixed on a lower portion of the vertical upright having the sheave 51. From the sheave 52 the cable 49 extends to a winch 53.

An electric motor 54, for operating the winch 53, is mounted upon a ledge 55 itself rigidly supported upon the ground or other surface. A drive belt 56 which rides over a pulley fixed upon the shaft of the motor 54 also rides over a pulley adapted to be rotated to cause the winch 53 to be operated. The horizontal platform 41 will be caused to be moved longitudinally of the vertical uprights of the hoist in response to actuation of the electric motor 54. The construction and arrangement can be such that the electric motor and winch will cause the horizontal platform to remain in any position to which moved by said electric motor. in an instance when the motor employed was an ordinary electric motor, the horizontal platform 41 would be elevated in response to operation of the motor and allowed to become depressed by gravity when released by the motor and winch. Or, the motor employed could be of type adapted to he rotated in either of opposite directions. The construction and arrangement including the stub shafts 47, the pulleys 48, the cable 49 upon the pulleys and having an end thereof secured to a vertical upright of the hoist and an opposite end portion thereof manipulable by the motor and winch, together with appurtenant parts, constitutes an equalizing mechanism for maintaining the platform 41 in horizontal position during raising and lowering of said platform.

The uppermost girder member 24 of each vertical upright 23 merges in a horizontal arm 57 which is situated at the side of the vertical uprights adjacent the building construction 21 and in perpendicular relation to said vertical uprights. Each horizontal arm 57 consists of a body portion 58 constituted as a continuation of the body portion 25 of the corresponding girder member and flange portions 59, 59 constituted as continuations of the flange portions of said corresponding girder member. Inwardly extending parts 60, 60 of flange portions 59, 59 of each arm-57 are integral with and constituted as continuations of inwardly extending parts 27, 27 of the corresponding girder member.

The body portions 58 and the inwardly extending parts 60, 60 of theflange portions 59 of the horizontal arms 57 upon uppermost girder members 24 of the different vertical uprights 23 together provide oppositely disposed, inwardly facing channel elements which constitute horizontal guideways of the hoist in facing relation to each other. The horizontal guideway which the body portions 58 and the inwardly extending parts 60, 60 of each horizontal arm 57 provide is in fact a continuation of the longitudinal guideway provided by the body portion 25 and the inwardly extending parts 27, 27 of the corresponding girder member 24.

A sling 61 constituted as an upwardly facing L-shape frame in the disclosure as made, has an apex thereof pivotally mounted, as at-62, upon the horizontal platform 41 for swinging movement of said sling toward and away from the vertical uprights 23, 23. The axis 62 of the sling' 61' is in'parallel relation to the building construction.

A first leg 63 of said sling normally is situated at the side of the sling axis opposite the vertical uprights, and a second leg 64 of the sling normally is situated at the side of said sling axis adjacent said vertical uprights.

Free upper, outer end portions of the second leg 64 of the sling 61 rigidly support a set of transversely alined actuator rollers 65, 65 which extend outwardly and are at times situated in the longitudinal guideways provided by the inwardly extending parts 27, 27 of oppositely disposed girder members and are at times situated in the horizontal guideways provided by the inwardly extending parts 60, 60 of the oppositely disposed horizontal arms 57, 57. The actuator rollers 65, 65 span the distance between the inwardly extending parts 27, 27 and 60, 60.

A tower for the twist is constituted as a floor 66 and spaced supporting posts 67 for said floor. The tower is situated at the side of the hoist opposite the building construction, and the floor 66 includes an open area 68 for reception of the platform 41.

In Figs. 1 and 9, 69 represents a bracing element ex-. tending between the free end of a horizontal arm 57 and the building construction.

Referring to Figs. 11 to 13 of the drawings, parts there shown which are the same as or equivalent to parts hereinbefore described are given the same reference numerals. The construction of the hoist of Figs. 11 to 13 is substantially the same as hereinbefore set forth, except that the bracing element 70 is secured between the horizontal arm 57 and the floor structure 40, a hopper 71 is supported upon the hoist beneath said horizontal arm 57, and the platform 41 pivotally supports, as at 72, a tiltable bucket 73. The axis 72 for the bucket 73 is horizontal and in perpendicular relation to the horizontal arms 57.

Free upper outer end portions of a side wall of the tiltable bucket 73 rigidly support a set of transversely alined actuator rollers 7 4, 74 which extend outwardly and are at times situated in the longitudinal guideways provided by the inwardly extending parts 27, 27 of oppositely disposed girder members and are at times situated in the horizontal guideways provided by the inwardly extending parts of the oppositely disposed horizontal arms 57, 57. The actuator rollers 74, 74 span the distance between the inwardly extending parts of the flange portions of the vertical uprights 23 and the hroizontal arms 57.

With respect to Figs. 14 and 15, parts similar to parts hereinbefore described bear the same reference numerals.

A flooring upon the horizontal platform 41, suitably and conveniently secured thereto, as at 75, is denoted 76. In Figs. 14 and 15, the flooring 76 has replaced the sling 61 of Figs. 1, 2, 5 and 9, or the tiltable bucket 73 of Fig. 11.

Several different manners in which the hoist can be put to use in practice will be apparent. As disclosed in Figs. 1 to 10, the hoist is employed to handle elongated members or materials, such as boards, rails, pipe, etc. As disclosed in Figs. 11 to 13, the hoist is employed to handle materials of various descriptions, such as blocks, sand, gravel, loose cement, etc. As disclosed in Figs. 14 and 15, the hoist can be employed to convey portable articles, such as wheel bar-rows, trucks, etc., to various floors of buildings under construction.

The new and improved hoist can be easily and quickly altered during practical operation to be rendered capable of accomplishing various different types of work required to be done in the building industry.

The guide rollers 45, 45 and 46, 46 retain the sling 61 and the tiltable bucket 73 in proper load transporting or carrying position until to be diunped. With elevation of the actuator rollers 65 to the location of the horizontal arms 57, the load carried by the sling 61 is dumped, and with elevation of the actuator rollers 74 to the location of said horizontal arms 57, the load carried by the tiltable bucket 73 is dumped. See the position of the sling 61 in Fig. 9, and the dotted line position of the tiltable bucket 73 in Fig. 11.

What is claimed is:

1. In a hoist, spaced apart vertical uprights, spaced.

tending flanges upon said horizontal arms providing hori-.-

zontal guideways of said hoist in facing relation to each other at the same side of said vertical uprights, said horizontal guideways being constituted as continuations of said longitudinal guideways, respectively, a platform, a frame rigid with said platform, vertically spaced guide elements upon said frame ridable in the longitudinal guideways of said vertical uprights, respectively, a holder for materials, means mounting said holder upon said platform for rotative movement, actuator elements upon portions of said holder spaced from its axis ridable in said longitudinal and horizontal guideways, and means for accomplishing movement of said frame with platform longitudinally of said vertical uprights.

2. In a hoist, spaced apart vertical uprights, a platform, a frame rigid with said platform and including horizontal forward and rearward frame members between and extending transversely of said vertical uprights, means supporting said frame upon said vertical uprights for movement longitudinally thereof, spaced apart stub shafts in and perpendicular to said forward and rearward frame members and adjacent said vertical uprights, respectively, a plurality of pulleys upon each of said stub shafts and between said forward and rearward frame members, and means for accomplishing movement of said frame with platform longitudinally of said vertical uprights including a cable having an end thereof. anchored to one of said vertical uprights and an intermediate portion thereof ridable upon each of said plurality of pulleys and over a sheave upon the vertical upright other than the one to which said cable is anchored.

3. In a hoist, spaced apart vertical uprights, spaced apart, inwardly extending flanges upon said vertical uprights providing longitudinal guideways of the hoist in faeingrelation to each other, a platform, a frame rigid with said platform and including horizontal forward and rearward frame members between and extending transversely of said vertical uprights, vertically spaced guide elements upon said frame ridable in the longitudinal guideways of said vertical uprights, respectively, spaced apart stub shafts in and perpendicular to said forward and rearward frame members and adjacent said vertical uprights, respectively, a plurality of pulleys disposed in proximate relation to each other on each of said stub shafts and between said forward and rearward frame members, and means for accomplishing movement of said frame with platform longitudinally of said vertical uprights including a cable having an end thereof anchored to one of said vertical uprights and an intermediate portion thereof ridable upon each of said plurality of pulleys and over a sheave upon the vertical upright other than the one to which the cable is anchored.

4. In a hoist, devices for retaining body pontions and flange portions, respectively, of first and second girder members of H-s-hape in cross-section in end to end relation and vertical alinement, comprising a first anchor plate secured in an end portion of the first girder member between flange portions thereof and in spaced relation to the body portion of said first girder member, a second anchor plate secured in an end portion of the second girder member between flange portions thereof and in contiguous relation to the body portion of said second girder member, and a tongue constituted as an integral extension of said second anchor plate in alinement therewith adapted to be tightly fitted in a concavity of said first girder member bounded by said first anchor plate and the body portion and the flange portions of the first girder member.

:1 I 5. In a hoist, devices for retaining body portions and flange portions, respectively, of first and second girder members of H-shape in end to end relation and vertical alinement, comprising a first anchor plate secured in an end portion of the first girder member between flange portions thereof and in spaced relation to the body portion of said first girder member, a second anchor plate secured in an end portion of the second girder member between flange portions thereof and in contiguous relation to the body portion of said second girder member, a tongue constituted as an integral extension of said second anchor plate in alinement therewith adapted to be tightly fitted in a concavity of said first girder member bounded by said first anchor plate and the body portion and the flange portions of the first girder member, and a locking plate for detachably securing said first and second girder members to each other situated at their location of jointure.

6. In a hoist, spaced apart vertical uprights each including first and second girder members, spaced apart, outwardly extending flanges upon the first and second girder members of each of said vertical uprights, a first anchor plate secured in an end portion of the first girder member of each of said vertical uprights between outwardly extending flanges and in spaced relation to a body portion thereof, a second anchor plate secured in an end portion of the second girder member of each of said vertical uprights between flange portions and in contiguous relation to a body portion thereof, a tongue constituted as an integral extension of the second anchor plate upon the second girder member of each of said vertical uprights adapted to be tightly fitted in a concavity of the first girder member of the corresponding vertical upright bounded by the first anchor plate thereon and said first girder member and the outwardly extending flanges thereon, spaced apart, inwardly extending flanges upon said vertical uprights providing longitudinal guideways of said hoist in facing relation to each other, a platform, a frame rigid with said platform, and vertically spaced guide elements upon said frame disposed in the longitudinal guideways of said vertical uprights, respectively.

7. The combination as specified in claim 6, spaced apart, horizontal arms constituted as continuations of upper portions of said vertical uprights, respectively, spaced apart, inwardly extending flanges upon said horizontal arms providing horizontal guideways of said hoist in facing relation to each other at the same side of said vertical uprights, a holder for materials, means mounting said holder upon said platform for rotative movement, and an actuator element upon a portion of said holder disposed in one of said horizontal guideways.

8. The combination as specified in claim 7, and means for accomplishing movement of said frame with platform longitudinally of said vertical uprights.

9. The combination as specified in claim 6, and looking plates for detachably securing the first and second girder members of each of said vertical uprights to each other.

10. The combination as specified in claim 7, and locking plates for detachably securing the first and second girder members of each of said uprights to each other.

11. The combination as specified in claim 7, locking plates for detachably securing the first and second girder members of each of said uprights to each other, and a horizontal cross-beam connected between locking plates upon said vertical uprights, respectively.

References Cited in the file of this patent UNITED STATES PATENTS 1,071,247 Leyda Aug. 26, 1913 1,504,415 Barrett et a1. Aug. 12, 1924 1,710,442 Warshaw Apr. 23, 1929 1,714,990 Sehmid May 28, 1929 1,781,211 Beaumont Nov. 11, 1930 1,870,962 Oldroyd Aug. 9, 1932 2,143,189 Ewing Jan. 10, 1939 2,297,572 Martin Sept. 29, 1942 2,434,002 Moore Jan. 6, 1948 2,588,458 Allphin et a1. Mar. 11, 1952 2,588,959 Campbell Mar. 11, 1952 2,624,546 Haumerson a Jan. 6, 1953 2,693,891 English Nov. 9, 1954 

